A space probe weighs 137 N on Mars. What does it weigh on Earth?

Question

A space probe weighs 137 N on Mars. What does it weigh on Earth?

Answer 1

The surface gravity on Mars is one third the surface gravity on Earth.  So any object on Mars weighs one third what it would weigh on Earth.

But remember that the Newton (N) is not a measurement of weight, it is a measurement of the force required to give a mass of 1 kg an acceleration of 1 meter per second per second.  On Earth, a mass of 1 kg exerts a force of about 9.81 N.

So 137 N would weigh about 13.95 kg on Mars.

That same object would weight 3 times that on Earth (or about 41.89 kg).

Answer 2

360 Newtons.

Acceleration of gravity is 9.78 m/s^2 on Earth and 3.72 m/s^2 on Mars. 137*9.78/3.72=360

lindajune is wrong. Newtons DO measure weight because weight is a force. Kilograms measure mass.